234k views
2 votes
Question

SHOW CA
If C = y + 5 and D = y²y-9, find an expression that equals 2C - D in standard
form.
B

1 Answer

7 votes

Final answer:

To find the expression 2C - D, substitute the given expressions for C and D into the expression. Expanding and simplifying gives -y² + 2y + 19.


Step-by-step explanation:

To find an expression that equals 2C - D, we substitute the given expressions for C and D into the expression. Given that C = y + 5 and D = y² - 9, we have:

2C - D = 2(y + 5) - (y² - 9).

Expanding and simplifying the expression gives:

2(y + 5) - (y² - 9) = 2y + 10 - y² + 9 = -y² + 2y + 19.

Therefore, the expression 2C - D, in standard form, is -y² + 2y + 19.


Learn more about Expression simplification

User Yellowcap
by
8.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories